Examples:1.) The rap singer was known for his ostentatious appearance, including flashy jewelry.2.) He portrays the typical millionaire who avoids the ostentatious display of affluence.3.) Lady Bountiful's ostentatious charity caught much notice.

Origin: 1650–60; ostentat(ion) + -ious• Ostentation (noun): Display intended to impress others.Example: It was felt to connote flash and ostentation rather than style and elegance.